How can I prevent re-render when window resize or lost focus in angular 6
I have a component in Angular 6.0.8, which only contain an iframe.
page.component.html:
<iframe [src]="url">
page.component.ts:
ngOnInit() {
this.url = this.route.snapshot.data['url];
}
Now, when I resize the window or click mouse outside of component (lost focus), angular will re-render it (lifecycle-hooks shows: DoCheck, AfterContentChecked, AfterViewChecked)
And browser will request the url in the iframe again, which is not what i supposed to.
How to prevent this behavior?
javascript
angular typescript webpage-rendering edited Nov 16 '18 at 9:59
Eugene Mihaylin
9961725
asked Nov 16 '18 at 8:54
RavenRaven
10516
add a comment |
I have a component in Angular 6.0.8, which only contain an iframe.
page.component.html:
<iframe [src]="url">
page.component.ts:
ngOnInit() {
this.url = this.route.snapshot.data['url];
}
Now, when I resize the window or click mouse outside of component (lost focus), angular will re-render it (lifecycle-hooks shows: DoCheck, AfterContentChecked, AfterViewChecked)
And browser will request the url in the iframe again, which is not what i supposed to.
How to prevent this behavior?
javascript
angular typescript webpage-rendering edited Nov 16 '18 at 9:59
Eugene Mihaylin
9961725
asked Nov 16 '18 at 8:54
RavenRaven
10516
add a comment |
I have a component in Angular 6.0.8, which only contain an iframe.
page.component.html:
<iframe [src]="url">
page.component.ts:
ngOnInit() {
this.url = this.route.snapshot.data['url];
}
Now, when I resize the window or click mouse outside of component (lost focus), angular will re-render it (lifecycle-hooks shows: DoCheck, AfterContentChecked, AfterViewChecked)
And browser will request the url in the iframe again, which is not what i supposed to.
How to prevent this behavior?
javascript
angular typescript webpage-rendering edited Nov 16 '18 at 9:59
Eugene Mihaylin
9961725
asked Nov 16 '18 at 8:54
RavenRaven
10516
I have a component in Angular 6.0.8, which only contain an iframe.
page.component.html:
<iframe [src]="url">
page.component.ts:
ngOnInit() {
this.url = this.route.snapshot.data['url];
}
Now, when I resize the window or click mouse outside of component (lost focus), angular will re-render it (lifecycle-hooks shows: DoCheck, AfterContentChecked, AfterViewChecked)
And browser will request the url in the iframe again, which is not what i supposed to.
How to prevent this behavior?
javascript
angular typescript webpage-rendering javascript
angular typescript webpage-rendering edited Nov 16 '18 at 9:59
Eugene Mihaylin
9961725
asked Nov 16 '18 at 8:54
RavenRaven
10516
edited Nov 16 '18 at 9:59
Eugene Mihaylin
9961725
asked Nov 16 '18 at 8:54
RavenRaven
10516
edited Nov 16 '18 at 9:59
Eugene Mihaylin
9961725
edited Nov 16 '18 at 9:59
Eugene Mihaylin
9961725
edited Nov 16 '18 at 9:59
Eugene Mihaylin
9961725
9961725
asked Nov 16 '18 at 8:54
RavenRaven
10516
asked Nov 16 '18 at 8:54
RavenRaven
10516
asked Nov 16 '18 at 8:54
RavenRaven
10516
10516
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
One of the most recomended ways (to solve not this concrete problem, but all unneeded rerenders) is to use change detection strategy on push (ChangeDetectionStrategy.OnPush).
A comprehensive guide to angular onpush change detection strategy
By default Angular uses the
ChangeDetectionStrategy.Defaultchange detection strategy.
The default strategy doesn’t assume anything about the application, therefore every time something changes in our application, as a result of various user events, timers, XHR, promises, etc., a change detection will run on all components.
This means anything from a click event to data received from an ajax call causes the change detection to be triggered.
...
OnPush Change Detection Strategy
We can set the ChangeDetectionStrategy of our component to ChangeDetectionStrategy.OnPush .
Example:
@Component({
selector: 'tooltip',
template: `
<h1>{{config.position}}</h1>
{{runChangeDetection}}
`,
changeDetection: ChangeDetectionStrategy.OnPush
})
answered Nov 16 '18 at 9:06
Eugene MihaylinEugene Mihaylin
9961725
works like a charm, thanks
– Raven
Nov 16 '18 at 9:11
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
One of the most recomended ways (to solve not this concrete problem, but all unneeded rerenders) is to use change detection strategy on push (ChangeDetectionStrategy.OnPush).
A comprehensive guide to angular onpush change detection strategy
By default Angular uses the
ChangeDetectionStrategy.Defaultchange detection strategy.
The default strategy doesn’t assume anything about the application, therefore every time something changes in our application, as a result of various user events, timers, XHR, promises, etc., a change detection will run on all components.
This means anything from a click event to data received from an ajax call causes the change detection to be triggered.
...
OnPush Change Detection Strategy
We can set the ChangeDetectionStrategy of our component to ChangeDetectionStrategy.OnPush .
Example:
@Component({
selector: 'tooltip',
template: `
<h1>{{config.position}}</h1>
{{runChangeDetection}}
`,
changeDetection: ChangeDetectionStrategy.OnPush
})
answered Nov 16 '18 at 9:06
Eugene MihaylinEugene Mihaylin
9961725
works like a charm, thanks
– Raven
Nov 16 '18 at 9:11
add a comment |
One of the most recomended ways (to solve not this concrete problem, but all unneeded rerenders) is to use change detection strategy on push (ChangeDetectionStrategy.OnPush).
A comprehensive guide to angular onpush change detection strategy
By default Angular uses the
ChangeDetectionStrategy.Defaultchange detection strategy.
The default strategy doesn’t assume anything about the application, therefore every time something changes in our application, as a result of various user events, timers, XHR, promises, etc., a change detection will run on all components.
This means anything from a click event to data received from an ajax call causes the change detection to be triggered.
...
OnPush Change Detection Strategy
We can set the ChangeDetectionStrategy of our component to ChangeDetectionStrategy.OnPush .
Example:
@Component({
selector: 'tooltip',
template: `
<h1>{{config.position}}</h1>
{{runChangeDetection}}
`,
changeDetection: ChangeDetectionStrategy.OnPush
})
answered Nov 16 '18 at 9:06
Eugene MihaylinEugene Mihaylin
9961725
works like a charm, thanks
– Raven
Nov 16 '18 at 9:11
add a comment |
One of the most recomended ways (to solve not this concrete problem, but all unneeded rerenders) is to use change detection strategy on push (ChangeDetectionStrategy.OnPush).
A comprehensive guide to angular onpush change detection strategy
By default Angular uses the
ChangeDetectionStrategy.Defaultchange detection strategy.
The default strategy doesn’t assume anything about the application, therefore every time something changes in our application, as a result of various user events, timers, XHR, promises, etc., a change detection will run on all components.
This means anything from a click event to data received from an ajax call causes the change detection to be triggered.
...
OnPush Change Detection Strategy
We can set the ChangeDetectionStrategy of our component to ChangeDetectionStrategy.OnPush .
Example:
@Component({
selector: 'tooltip',
template: `
<h1>{{config.position}}</h1>
{{runChangeDetection}}
`,
changeDetection: ChangeDetectionStrategy.OnPush
})
answered Nov 16 '18 at 9:06
Eugene MihaylinEugene Mihaylin
9961725
One of the most recomended ways (to solve not this concrete problem, but all unneeded rerenders) is to use change detection strategy on push (ChangeDetectionStrategy.OnPush).
A comprehensive guide to angular onpush change detection strategy
By default Angular uses the
ChangeDetectionStrategy.Defaultchange detection strategy.
The default strategy doesn’t assume anything about the application, therefore every time something changes in our application, as a result of various user events, timers, XHR, promises, etc., a change detection will run on all components.
This means anything from a click event to data received from an ajax call causes the change detection to be triggered.
...
OnPush Change Detection Strategy
We can set the ChangeDetectionStrategy of our component to ChangeDetectionStrategy.OnPush .
Example:
@Component({
selector: 'tooltip',
template: `
<h1>{{config.position}}</h1>
{{runChangeDetection}}
`,
changeDetection: ChangeDetectionStrategy.OnPush
})
answered Nov 16 '18 at 9:06
Eugene MihaylinEugene Mihaylin
9961725
edited Nov 16 '18 at 9:52
answered Nov 16 '18 at 9:06
Eugene MihaylinEugene Mihaylin
9961725
answered Nov 16 '18 at 9:06
Eugene MihaylinEugene Mihaylin
9961725
answered Nov 16 '18 at 9:06
Eugene MihaylinEugene Mihaylin
9961725
9961725
works like a charm, thanks
– Raven
Nov 16 '18 at 9:11
add a comment |
works like a charm, thanks
– Raven
Nov 16 '18 at 9:11
works like a charm, thanks
– Raven
Nov 16 '18 at 9:11
works like a charm, thanks
– Raven
Nov 16 '18 at 9:11
add a comment |
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